Yes, there might be. The Naruto fandom is vast and diverse, and with the concept of crossover fanfictions being popular, it's entirely possible that someone has created a fanfiction where Naruto is portrayed as a Daedric Prince. There are many fanfiction writers who like to blend different fictional universes to create unique and interesting stories.
Once upon a time in the realm of Oblivion, a great daedric war raged. The Daedric Prince Mehrunes Dagon led his hordes against the forces of another prince. Fire and shadow filled the skies. The warriors of Dagon were fearsome, with jagged blades and dark magic. But the opposing side had their own tricks. They summoned ancient spirits to counter the attack. In the end, it was a long and brutal battle that changed the power dynamics among the Daedric Princes for centuries.
In a daedric war story, usually, it starts with a reason for the war. Maybe a dispute over territory in Oblivion or a power struggle among the princes. Then comes the mustering of troops. Daedric minions are brought from all corners of their respective realms. As the war progresses, there are battles at key locations. These could be near portals or magical ley lines. There are also betrayals and alliances that shift throughout the war, making it even more complex.
One possible plot could be that Naruto is suddenly transported to the world of Daedric Princes. He has to figure out how to use his new powers while still maintaining his ninja values. He might encounter other Daedric Princes who are initially hostile but then come to respect him as he shows his strength and determination.
One interesting concept could be the fusion of Naruto's world with the elements related to the Daedric Princes. For example, the idea of Naruto characters encountering the strange and often morally ambiguous powers associated with the Daedric Princes. It might lead to unique power - ups or challenges for the characters as they navigate this new and unfamiliar type of magic.
Naruto himself is very likely to be a main character. Since he is the central figure in the Naruto series, in a fanfiction involving Daedric Princes, he would probably be the one to first encounter or be affected by their presence. Another could be Sasuke. His complex character and his pursuit of power could make for an interesting interaction with the Daedric Princes' powers.
One common theme is temptation. Daedric Princes often offer something alluring like power, knowledge or wealth. Another theme is moral conflict. The characters in the fanfictions usually have to decide whether to accept the Prince's offer which often comes with a dark side. For example, accepting power from a Prince might mean harming innocent people.
In a Harry Potter and Daedric Prince fanfiction, it could be that the Daedric Princes are aware of the prophecy about Harry Potter. They see an opportunity to either help or hinder Voldemort's rise to power based on their own motives. For example, a Daedric Prince might want to keep the balance of power in the wizarding world and decides to secretly protect Harry. On the other hand, another Prince could side with Voldemort in hopes of getting a share of the power he would gain if he conquered the wizarding world. There could also be a situation where a Daedric Prince's magic has an unexpected effect on the magic in the Harry Potter universe, like changing the properties of potions or the way spells work.
If Harry Potter was trained by a Daedric Prince in fanfiction, he would likely become a much more complex character. His moral compass might be shaken. The Daedric Prince could teach him skills that are not part of the normal Hogwarts curriculum, such as summoning otherworldly creatures. This would make Harry a target for the Ministry of Magic, who would see him as a threat to the status quo.
It would likely include elements of both Harry Potter and the Daedric Prince lore. For example, Harry might have some special abilities or a new identity related to the Daedric Princes. There could be new magical creatures from the Daedric Prince world introduced into the Harry Potter universe, or vice versa.